Electric cell with constant intensity



2 Sheets-Sheet 1 March 1927.

22 J. PELLINI ELECTRIC c1111. WITH consum INTE'NsITY Filed June 50, 1925 O .u Nt EP Nw 1M J -ATToR NEYS.

M ch l Z at 22V 9 7 J. PELLINI ELECTRIC CELL WITH CONSTANT INTENSITY Filed June' 30;'1925 a sham-smet 2 ATT 0R N EVS.

Patented Mar. 22, 1927.

UNITED STA JOSEPH PELLINI, F

TES

ELECTRIC CELL WITH Application led June 30, 1925, Serial No.

This invention relates to electric batteries, the object of the invention being toprovide a two-liquid battery the current intensity of which will be constant for a predetermined time, which battery is of very simple construction and at the same time extremely resistant, licht and economical inuse.

the claims.

A further object of the invention is to provide an electrolyte which may be prepared beforehand at small cost, said electrolyte being made up of two distinct liquids the proportions of' which may be chosen so as to determine the approximate life of the charge, and by means of which thebattery.

may be re-charged Without-danger regardless of the surroundings. With the foregoing and other objects in view, which will appear as the description proceeds, the invention consists in the novel features of construction and combination of parts which will be more fully described hereinafter and particularly pointed out in In the accompanying drawing, i Fig. 1 is a vertical central section of a batteryembodying the features of the present invention, and showing in dotted lines a. light bulb, a reiector anda handle attachedorganization in whic the light may be operated by means of an ordinary push but# ton' Fig. A5 is a partial side elevation illus-V trating a modified organization of the batg. 6 1s a v1ew l 5. e'same characters of reference designate the same partsin the diierent figures terFy and lamp; and F i taken at right4 angles 'to of the drawing.

ymade 4 crease the reacting .,surface, said carbon erably formed of rubber, being'provided for/110 Referrlng to the drawing, the body of the battery comprises a cylindrical metallic casing A, concentrically within which are dis- `-posed a c lindrical zinc element B, a porous mem r C and a carbon D, the latter being preferably formed of pure carbon and ollow and perforated so as to in- PATENT OFFICE.I

40,477,51111 *in- France Nevember 22, 1924.

.,other. vy As shown clearly in Fig. 1, the terminal E forming the positive pole, passes through the washers H Aand H', the latter serving as a support for the carbon element D. The casing A serves as the negative pole, and a switch I having a stem threaded through a block of insulating material disposed in an opening in the cover G,is adapted to bridge a gap between two strips of metal A and E secured respectively to the members A and E, said switch being pro-` vided with a crossbar by means-otl which the battery circuit.

In practice the 'porous vessel C is filled with a depolarizing solution, said .vessel being in turn immersed in an electrolyte carried by the casing A. The current intensity of the battery varies with the degree of porosity of the vessel C, whereby more or less rapid action of one solution upon the other vis permitted.

The electrolyte'preferably comprises approximately 150 grams of magnesiumy sulphate (bitter salt), approximately 150 grams of potassiumsulphate, and grams of sodium sulphate, dissolved in 1 litre of water (A. F.).

The depolarizing liquid consists of approximately 180 grams of sodium bichromate dissolved in-1 litre ot water, and approximately 5 centilitres of sulphurc acid added thereto.

VA flanged fiberu or woodenk ,S0 vswitch may be rotated to close or open the In the form illustrated in Fig. 3, the tubular carbon element D' is Shown as having its lower end open lthereby to permit freer access of the depolarizing liquid to the interior thereof, Nvhile the zinc ,elementlB is disposed in contact with the casing A instead of being spaced therefrom as in Figs. 1 and 2, insulating washers F', F prefretaining the porous vessel C properly spaced from the member B. In this form the battery is shown as forming the body of a lamp, and for this pur ose is provided with a fiat cover or lid G W iich is provided with filling orifices normally closed by plugs N and O, t-he casing A being provided near its bottom with an outlet port normally closed by a plug A, whereby the liquid may be drawn oif whenever desired.

Attached to the cover G at the center thereof is alight holder or socket P in which is secured a light bulb J, and for the protection of this bulb a glass tube Q is provided, said tube being secured in bulb-cncircling position between the cover G and a. metal disk R', said disk being supported by a pair of standards or rods S secured at their lower ends in the cover G', a rubber washer R being disposed between the end of the glass tube and the disk R. The disk is so constructed as to form a reflector for the light, and a hook S is attached to the center of the dfsk whereby the device may be suspended from an overhead support as with the ordinary miners lamp. A switch T -is provided for operating the light. The operation of this switch is `shown diagrammatically in Fig. 4. The switch button may be provided with a stem T having a slot which is engaged by a pin X carried by the cover G', said pin forming one pole of the battery. By operating the switch backwards andv forwards .as indicated by the arrows in Fig. 4 the stem T is carried into and out of contact with the enlarged end of the wire U leading to the lamp d, which is connected by the wire U to the carbon electrode D of the battery.

In thel embodiment shown in Figs. 5 and 6, the lid G is provided with a centrally dispose-d bushing upon which a parabolic reflector J is pivotall mounted, in which reector is secured a light bulb adapted to be placed in circuit with the battery by a switch disposed in the reflector and operated by a rod having an enlarged head T. In this form the battery is shown provided with a bail handle M secured by means of thumb screws M to perforated ears or lugs L carried by the cover. A similar bail handle M is shown carried by the structure illustrated in Fig. l, whereby 'said structure vis adapted to be suspended jfrom an over head support. i

From the foregoing it will be seen that the battery herein described is adapted for a large varety of applications, and while I have described in detail the structures herein illustrated, it is to be understood that these structures are not intended to limit my inventionl to the precise features of construc tion shown, butare for purposes of illustration only.

Having thus described my invention, what I claim is: i

l l. A two-liquid electric battery having a constant intensity for a predeternnncd time, comprising an outer vessel forming the negative element, a centrally disposed hollow perforated carbon member Jforming the positive element, a porous tubular member within said outer vessel and separating the same from said carbon member, an electrolyte consisting of a solution of magnesium sulphate, potassium sulphate and sodium sulphate in water carried by said outer vessel between it and` said porous member, and

a depolarizing liquid carried within said porous member and composed of a slightly acidulated solution of sodium bichromate in p `water, the relative proportions of the depolariz'ing liquld and electrolyte beingregulated so as to retain constant intensity for a predetermined time.

2. A ltwo-liquid electric battery having a constant intensity for a predetermined time, comprising an outer vessel forming the negative element, a centrally disposed hollow perforated carbon memberforming the positive element, a porous tubular member within said outer vessel and separating` the .same from said carbon member, an electrolyte consisting of a water-solution of magnesium sulphate, potassium sulphate and sodium sulphate in the relative proportions by weight of 150, 150 and 50 respectively, said electrolyte being carried within said outer vessel between it and said porous member, Vand va depolarizing liquid carried within said porous member and composed of a watersolution of sodium bichromate containing` a small quantity of sulphuric acid.

In testimony whereof I have signed lmy name to this speciication. JOSEPH PELLINI. 

